1. Utilize safe water and electricity separation technology: heat will be transferred through the refrigerant and heat exchangers to achieve safe separation of water and electricity, the safety of users is assured. 2. It has great heating and insulation capacity, which will be saving more energy: it adopts the design of central water supply system to realize multi-point three-dimensional hot water supply, and it's able to meet the demand of domestic water such as bathing, washing, kitchen, etc. 3. The special compressor for heat pump not only guarantees the reliable operation of the production, but also greatly improves the operating efficiency of the product, especially for the low-temperature state, the effect is more prominent, and it can be stably operated under extreme and inferior climate. There is 2 model of the product. ENE-3KR & ENE-4KR(V) Heating capacity(kW) 3.1 Power Specifications 220V~50Hz Water outlet(L/h) 75 Heating capacity(kW) 4.0 Power Specifications 220V~50Hz Water outlet(L/h) 77 Outlet water temperature(?) 40~60 Protection level IPX4 Dimensions(mm) 700*534*250 Configuration of the water tank(L) 200 Applicable ambient temperature range(?)-7~45 Heating capacity(kW) 4.0 Power Specifications 220V~50Hz Water outlet(L/h) 77 Outlet water temperature(?) 40~60 Protection level IPX4 Dimensions(mm) 700*534*250 Configuration of the water tank(L) 200 Applicable ambient temperature range(?) -7~45